Monitor



FIG. 1 is a perspective view of a monitor;

FIG. 2 is another perspective view thereof from a different view point;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a monitor, as shown and described. 